EP1101005A1 - Sicherheitssystem - Google Patents

Sicherheitssystem

Info

Publication number
EP1101005A1
EP1101005A1 EP99928063A EP99928063A EP1101005A1 EP 1101005 A1 EP1101005 A1 EP 1101005A1 EP 99928063 A EP99928063 A EP 99928063A EP 99928063 A EP99928063 A EP 99928063A EP 1101005 A1 EP1101005 A1 EP 1101005A1
Authority
EP
European Patent Office
Prior art keywords
frequency
signal
security
signal component
security system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP99928063A
Other languages
English (en)
French (fr)
Other versions
EP1101005B1 (de
Inventor
Kevin Trevor Talbot
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP1101005A1 publication Critical patent/EP1101005A1/de
Application granted granted Critical
Publication of EP1101005B1 publication Critical patent/EP1101005B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00309—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00309—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks
    • G07C2009/00555—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks comprising means to detect or avoid relay attacks
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C2009/00753—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys
    • G07C2009/00769—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys with data transmission performed by wireless means
    • G07C2009/00793—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys with data transmission performed by wireless means by Hertzian waves
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C2209/00—Indexing scheme relating to groups G07C9/00 - G07C9/38
    • G07C2209/60—Indexing scheme relating to groups G07C9/00174 - G07C9/00944
    • G07C2209/61—Signal comprising different frequencies, e.g. frequency hopping

Definitions

  • This invention relates to security systems and in particular to a
  • the remote transponder sends a coded response
  • unit can be used by a thief to capture the interrogation signal and relay it to
  • the security signal comprises first and second signal components
  • transmission of the second signal component is encoded in the first signal
  • the unit which is arranged in use to receive the security signal may be
  • the frequency of the second signal component may be generated in a
  • second signal component may be achieved by a substantially random
  • the unit arranged to receive the security signal may be arranged to
  • transmission of the second signal component may be selected is such that
  • the unit arranged to receive the security signal may be arranged to
  • the frequency of the first signal component may be in the order of 120
  • the frequency of the second signal component may be in the order of
  • the difference frequency may be in the order of 40 kHz
  • the security system may comprise a security system of a vehicle.
  • the invention also provides a method of controlling a security system
  • the security system comprising a security control unit and a remote
  • transponder unit arranged in use to communicate with each other using a
  • the method including: a) transmitting the security signal in first and second signal
  • components said components being transmitted at different frequencies
  • the method may include decoding, in the unit which is arranged in use
  • the method may include generating the frequency of the second signal
  • the method may include tuning the unit arranged to receive the
  • the method may include selecting the frequency of transmission of the
  • frequency of the second signal component and the frequency of the first signal component is substantially the same as the frequency of the second
  • the method may include determining the difference frequency as well
  • the method may include transmitting the first signal component at a
  • Figure 1 is a schematic diagram of a vehicle including a security system
  • FIG. 2 is a schematic diagram of the vehicle of Figure 1 while an
  • the security system of the present invention is a passive entry system
  • remote transponder which is carried by the user and which identifies itself
  • the security control unit opens the vehicle on receipt of a
  • a security system comprising a security control unit 12 fitted to the
  • the security control unit 12 transmits a coded security
  • This coded security signal is transmitted in the form of two signal
  • the frequency F2 of transmission of the second signal component S2 is
  • the remote transponder unit 14 is capable of tuning itself to receive the
  • transponder unit 14 is arranged to de-code the frequency F2 of the second
  • the frequency F2 of the second signal component S2 is generated
  • control unit 12 such that its difference frequency with respect to the
  • component S2 may instead be selected substantially randomly from a
  • control unit 12 and all of which would conform to the requirements laid out
  • the remote transponder unit 14 is arranged to determine the difference
  • the frequency of the first signal component SI is set to
  • the frequency F2 of the second signal component S2 is
  • the relay units 16, 18 are of the code grabber type known to car
  • One of the relay units 16 is positioned close to the vehicle 10 and
  • the second relay unit 18 is positioned close to the remote transponder unit
  • Such relay units 16, 18 commonly operate with a large bandwidth and
  • the relay unit 18 as a captured signal S4.
  • the relay unit 18 then re-transmits the signal it
  • the relay unit 16 can re-transmit the response signal S3 at its
  • the remote transponder 14 can, during normal communication
  • transponder unit 14 cannot determine the frequency F2 of the second signal
EP99928063A 1998-07-29 1999-06-17 Sicherheitssystem Expired - Lifetime EP1101005B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GBGB9816409.8A GB9816409D0 (en) 1998-07-29 1998-07-29 A security system
GB9816409 1998-07-29
PCT/GB1999/001943 WO2000006858A1 (en) 1998-07-29 1999-06-17 A security system

Publications (2)

Publication Number Publication Date
EP1101005A1 true EP1101005A1 (de) 2001-05-23
EP1101005B1 EP1101005B1 (de) 2004-09-15

Family

ID=10836300

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99928063A Expired - Lifetime EP1101005B1 (de) 1998-07-29 1999-06-17 Sicherheitssystem

Country Status (5)

Country Link
EP (1) EP1101005B1 (de)
AU (1) AU4519099A (de)
DE (1) DE69920233T2 (de)
GB (1) GB9816409D0 (de)
WO (1) WO2000006858A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10201580A1 (de) * 2002-01-17 2003-08-07 Philips Intellectual Property Verfahren zum Betreiben eines Zugangssicherungssystemes
FR3044100B1 (fr) * 2015-10-19 2018-01-05 Valeo Comfort And Driving Assistance Procede d'estimation d'une distance et unite electronique pour vehicule

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3536377A1 (de) 1985-10-11 1987-04-16 Bayerische Motoren Werke Ag Sicherheitseinrichtung fuer kraftfahrzeuge
DE4003280C5 (de) 1990-02-03 2007-06-28 Bayerische Motoren Werke Ag Sicherheitseinrichtung für Kraftfahrzeuge
US5319797A (en) * 1992-09-17 1994-06-07 Rockwell International Corporation Remote vehicle access featuring high security
DE4409167C1 (de) * 1994-03-17 1995-06-29 Siemens Ag Schlüssellose Zugangskontrolleinrichtung
GB9406754D0 (en) * 1994-04-06 1994-05-25 Doxas Michael Remote control radio key with ultimate protectin against decoding and accessing of codes by any method including scanners, grabbers and radio receivers
GB2310300B (en) * 1996-02-17 2000-04-19 Rover Group A vehicle security system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0006858A1 *

Also Published As

Publication number Publication date
EP1101005B1 (de) 2004-09-15
AU4519099A (en) 2000-02-21
WO2000006858A1 (en) 2000-02-10
DE69920233T2 (de) 2005-11-24
DE69920233D1 (de) 2004-10-21
GB9816409D0 (en) 1998-09-23

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